package com.iyunsir.lesson03_udp;


import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

// 不需要连接服务器
public class UdpClientDemo01 {
    public static void main(String[] args) throws Exception {
        // 1.建立一个socket
        DatagramSocket socket = new DatagramSocket();

        // 2.建个包
        String msg = "你好，服务器!";

        // 3.发送给谁
        InetAddress localhost = InetAddress.getByName("localhost");
        int port = 9090;

        // 4.数据,数据的长度起始,要发给谁
        DatagramPacket packet = new DatagramPacket(msg.getBytes(),0,msg.getBytes().length,localhost,port);

        // 5.发送包
        socket.send(packet);

        // 6.关闭流
        socket.close();
    }



}
